# HG changeset patch # User Scott Morrison # Date 1284955309 18000 # Node ID 5ab4581dc082b45ba65245d4cbe703fad2d8143f # Parent 9caa4d68a8a57981fad137c58440e86be9abb747 fixing some subscripts associated to homotopies diff -r 9caa4d68a8a5 -r 5ab4581dc082 text/evmap.tex --- a/text/evmap.tex Sun Sep 19 22:57:10 2010 -0500 +++ b/text/evmap.tex Sun Sep 19 23:01:49 2010 -0500 @@ -105,7 +105,7 @@ of $X$ where $B$ is embedded. See Definition \ref{defn:configuration} and preceding discussion.) It then follows from Corollary \ref{disj-union-contract} that we can choose -$h_1(b) \in \bc_1(X)$ such that $\bd(h_1(b)) = s(b) - b$. +$h_1(b) \in \bc_2(X)$ such that $\bd(h_1(b)) = s(b) - b$. Roughly speaking, $s(b)$ consists of a series of 1-blob diagrams implementing a series of small collar maps, plus a shrunken version of $b$. @@ -131,7 +131,7 @@ \[ s(b) = \sum_{i,j} c_{ij} + g(b) \] -and choose $h_1(b) \in \bc_1(X)$ such that +and choose $h_1(b) \in \bc_2(X)$ such that \[ \bd(h_1(b)) = s(b) - b . \] @@ -252,7 +252,7 @@ $\btc_*(B^n)$ is contractible (acyclic in positive degrees). \end{lemma} \begin{proof} -We will construct a contracting homotopy $h: \btc_*(B^n)\to \btc_*(B^n)$. +We will construct a contracting homotopy $h: \btc_*(B^n)\to \btc_{*+1}(B^n)$. We will assume a splitting $s:H_0(\btc_*(B^n))\to \btc_0(B^n)$ of the quotient map $q:\btc_0(B^n)\to H_0(\btc_*(B^n))$. @@ -367,7 +367,7 @@ It suffices to show that for any finitely generated pair of subcomplexes $(C_*, D_*) \sub (\btc_*(X), \bc_*(X))$ -we can find a homotopy $h:C_*\to \btc_*(X)$ such that $h(D_*) \sub \bc_*(X)$ +we can find a homotopy $h:C_*\to \btc_{*+1}(X)$ such that $h(D_*) \sub \bc_{*+1}(X)$ and $x + h\bd(x) + \bd h(x) \in \bc_*(X)$ for all $x\in C_*$. By Lemma \ref{small-top-blobs}, we may assume that $C_* \sub \btc_*^\cU(X)$ for some